Layered mesoporous CoO/reduced graphene oxide with strong interfacial coupling as a high-performance anode for lithium-ion batteries

Authors

Baicen Wan
Jiangcheng Guo
Weihong Lai, University of WollongongFollow
Yunxiao Wang, University of WollongongFollow
Min Liu, Beijing University of TechnologyFollow
Hua-Kun Liu, University of WollongongFollow
Jiazhao Wang, University of WollongongFollow
Shulei Chou, University of WollongongFollow
Shi Xue Dou, University of WollongongFollow

RIS ID

144497

Publication Details

Wan, B., Guo, J., Lai, W., Wang, Y., Liu, M., Liu, H., Wang, J., Chou, S. & Dou, S. (2020). Layered mesoporous CoO/reduced graphene oxide with strong interfacial coupling as a high-performance anode for lithium-ion batteries. Journal of Alloys and Compounds, 843

Abstract

© 2020 Elsevier B.V. Composites of few-layer transition metal oxides and graphene nanosheets with strong interfacial connection hold great promise as high-performance anodes for lithium-ion batteries, but it is highly challenging to realize full interfacial properties. Herein, we report an ultra-refined layer-by-layer mesoporous CoO/reduced graphene oxide (CoO/RGO) architecture synthesized via a facile method. The CoO/RGO has stacked interfaces between the CoO nanosheets and the graphene nanosheets via Co–O–C bonds, which has been proposed to have an important role in achieving excellent performance in lithium ion batteries with high initial capacity and good rate capability. It is shown that the CoO/RGO exhibits a high initial discharge capacity of 2189.4 mAh g−1 at a current density of 100 mA g−1. Furthermore, the CoO/RGO exhibits a high reversible capacity retention of 70% after prolonged 300 cycles at a high rate of 2 A g−1. Significantly, it delivers an ultrahigh reversible capacity of 1167 mAh g−1 at 5 A g−1 with an excellent reversible capacity retention of 76% over 40 cycles.